License clarification.
diff --git a/LICENSE b/LICENSE
index d60c31a..9d9bdc7 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,3 +1,11 @@
+--- A note on GPL versions
+
+BusyBox is distributed under version 2 of the General Public License (included
+in its entirety, below). Version 2 is the only version of this license which
+this version of BusyBox (or modified versions derived from this one) may be
+distributed under.
+
+------------------------------------------------------------------------
GNU GENERAL PUBLIC LICENSE
Version 2, June 1991